Kushwaha, Sunil . UGC-CSIR JRF/NET Physical Sciences(Physics) / by Sunil Kushwaha, N.M. Singh. - New Delhi : Danika Publishing Company , 2013 - 783p, 23 ; ISBN: 81-89301-05-5 Subjects--Topical Terms: Physics Dewey Class. No.: C / Q3;1